primeng/fesm2022/primeng-defer.mjs.map

PrimeNG is an open source UI library for Angular featuring a rich set of 80+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with PrimeB

{"version":3,"file":"primeng-defer.mjs","sources":["../../src/defer/defer.ts","../../src/defer/primeng-defer.ts"],"sourcesContent":["import { isPlatformBrowser } from '@angular/common';\nimport { AfterViewInit, ContentChild, Directive, EmbeddedViewRef, EventEmitter, inject, NgModule, OnDestroy, Output, TemplateRef, ViewContainerRef } from '@angular/core';\nimport { BaseComponent } from 'primeng/basecomponent';\nimport { Nullable } from 'primeng/ts-helpers';\n\n/**\n * Defer postpones the loading the content that is initially not in the viewport until it becomes visible on scroll.\n * @deprecated use Angular defer block instead.\n * @group Components\n */\n@Directive({\n    selector: '[pDefer]',\n    standalone: true\n})\nexport class Defer extends BaseComponent implements AfterViewInit, OnDestroy {\n    /**\n     * Callback to invoke when deferred content is loaded.\n     * @param {Event} event - Browser event.\n     * @group Emits\n     */\n    @Output() onLoad: EventEmitter<Event> = new EventEmitter<Event>();\n\n    @ContentChild(TemplateRef) template: TemplateRef<any> | undefined;\n\n    documentScrollListener: Nullable<Function>;\n\n    view: Nullable<EmbeddedViewRef<any>>;\n\n    viewContainer: ViewContainerRef = inject(ViewContainerRef);\n\n    ngOnInit() {\n        super.ngOnInit();\n        console.log('Defer is deprecated as of v18, use Angular defer block instead.');\n    }\n\n    ngAfterViewInit() {\n        super.ngAfterViewInit();\n        if (isPlatformBrowser(this.platformId)) {\n            if (this.shouldLoad()) {\n                this.load();\n            }\n\n            if (!this.isLoaded()) {\n                this.documentScrollListener = this.renderer.listen(this.document.defaultView, 'scroll', () => {\n                    if (this.shouldLoad()) {\n                        this.load();\n                        this.documentScrollListener && this.documentScrollListener();\n                        this.documentScrollListener = null;\n                    }\n                });\n            }\n        }\n    }\n\n    shouldLoad(): boolean {\n        if (this.isLoaded()) {\n            return false;\n        } else {\n            let rect = this.el.nativeElement.getBoundingClientRect();\n            let docElement = this.document.documentElement;\n            let winHeight = docElement.clientHeight;\n\n            return winHeight >= rect.top;\n        }\n    }\n\n    load(): void {\n        this.view = this.viewContainer.createEmbeddedView(this.template as TemplateRef<any>);\n        this.onLoad.emit();\n        this.cd.detectChanges();\n    }\n\n    isLoaded() {\n        return this.view != null && isPlatformBrowser(this.platformId);\n    }\n\n    ngOnDestroy() {\n        this.view = null;\n\n        if (this.documentScrollListener) {\n            this.documentScrollListener();\n        }\n    }\n}\n\n@NgModule({\n    imports: [Defer],\n    exports: [Defer]\n})\nexport class DeferModule {}\n","/**\n * Generated bundle index. 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